Here is a suggested list that will help you to make sure that you will have all that you need:
It's usually hot but it has been known to rain.


Passport (make sure Ms Farrell Has it by May 27!)

Mobile phone and charger
camera and charger
toiletries (toothbrush, shampoo)
sunglasses
sunscreen
hat
umbrella or/and rainjacket
sandles
sneakers
flipflops for the hotel
bathing suit (the hotel has a pool!)
sweater

small packs of tissues
reusable water bottle
Hand wipes/ wet ones
Money for extras
snack food